折板理论在箱梁分析中的应用

本文时运用折板理论分析箱梁空间作用的方法进行了较为深入的探讨。文中时薄壁杆件理论中目前普遍采用的一些假定进行了检验，指出了它们将会引起的误差。本文还阐明了运用折板理论分析箱梁的优.汽及其不足之处。此外，还就如何应用折板理论分析变截面箱梁的问题进行了讨论，提出了用等效梁的概念分段求解变截面箱梁的方法。 

The Application of Folded Plate Theory to the Analysis of Box Girders

Using the theory of folded plates, this article discusses the stress behaviour of box girders. Comparisons between existing experimental results and computations by this theory are made to verify the assumptions currently used in other theories of thin-walled beams. Advantages and disadvantages of the method are summarized. Besides, some efforts are made to solve the box girders with variable cross sections, using the concepts of finite segments and equivalent beams.